Final answer:
To find the height of the second tallest mountain: 2 hectometers (200m) and 3 dekameters (30m) convert to meters, sum to 230m, and then subtract these and an additional 7m from Mount Everest's 8,848m height, resulting in 8,611m for the second mountain.
Step-by-step explanation:
The Montaña más alta del mundo, or the tallest mountain in the world, is Mount Everest, with a height of 8,848 meters. The student is asked to calculate the height of the second tallest mountain, given that it is 2 hectometers (hm), 3 dekameters (dam), and 7 meters (m) less than Mount Everest. To solve this, we need to convert hm and dam to meters, sum these values, and then subtract from the height of Mount Everest.
1 dekameter (dam) = 10 meters (m)
2 hm = 2 × 100 m = 200 m
3 dam = 3 × 10 m = 30 m
Now, add the converted measurements:
200 m + 30 m = 230 m
Next, subtract the combined measurement and the additional 7 meters from the height of Mount Everest:
8,848 m - 230 m - 7 m = 8,611 m
Therefore, the height of the second tallest mountain is 8,611 meters.